子曰：“吾十有五而志于学，三十而立，四十而不惑，五十而知天命，六十而耳顺，七十而从心所欲，不逾矩。”
【译文】 孔子说：“我十五岁立志于学习，三十岁有所建树，四十岁不困惑，五十理解自然规律，六十明辨是非，七十随心所欲，不违规。”
The mining industry has the power to transform communities, but only if we do it responsibly.
我不相信完美的表演，只相信真诚的表演。
城市部落被高估了。
"We see what we want to see, and believe what we want to believe."
The concept of computational efficiency is central to the design of learning algorithms.